# CVE-2026-63746: SurrealDB authorization bypass via graph traversal

Source: https://junglewise.ai/threats/cve-2026-63746-surrealdb-authorization-bypass-via-graph-traversal  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-07-20. Updated: 2026-07-20  
License: CC BY 4.0 with a link back

CVE-2026-63746 · Severity: medium · CVSS 6.5 · Published 2026-07-20

SurrealDB, a multi-model cloud database, contains a security flaw where it fails to properly check user permissions during certain data queries. An authenticated user who has access to one part of the database can bypass security restrictions to read sensitive records from other tables by following data relationships (graph edges). This could lead to unauthorized access to private customer or business data, though the breach is limited to the specific database the user is already logged into.

Technologies: [surrealdb (crates.io)](https://junglewise.ai/threats/technologies/surrealdb). Vendors: [crates.io](https://junglewise.ai/threats/vendors/crates-io).

## Quick answers

**Is CVE-2026-63746 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-63746 being exploited in the wild.

**How severe is CVE-2026-63746?** Medium severity, with a CVSS score of 6.5, published 20 July 2026.

**Which products and versions are affected?** surrealdb (crates.io) SEMVER:introduced=0,fixed=3.1.0.

**Is there a fix for CVE-2026-63746?** Yes. surrealdb (crates.io): upgrade to 3.1.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-63746 attacked?** It is attacked over the network, in a hosted service.

**Am I affected by CVE-2026-63746?** Check whether you run surrealdb (crates.io) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- surrealdb (crates.io): upgrade to 3.1.0 or later

  ```sh
  cargo update -p surrealdb
  ```


## Technical details

A vulnerability in SurrealDB's query execution engine allows for an authorization bypass (CWE-863/CWE-200). The root cause is that 'GraphEdgeScan' and 'ReferenceScan' operations fetch records directly from storage without routing them through the 'Document::pluck_select' function, which is responsible for evaluating 'PERMISSIONS FOR select' clauses. An authenticated attacker with network access to the database can craft SurrealQL queries that traverse graph edges or back-references to access tables even if they are explicitly marked as 'PERMISSIONS FOR select NONE'. This bypass can extend through multi-hop chains. The issue is resolved in version 3.1.0 by implementing a per-batch permission cache that enforces checks during graph scans.

## Affected products

- SurrealDB SurrealDB < 3.1.0

## Identifiers

- CVE-2026-63746
- GHSA-vjjx-rfw4-rmfc

## Timeline

- 2026-05-27: advisory: GitHub Security Advisory published
- 2026-07-20: disclosed: NVD publication date

## References

- [https://github.com/surrealdb/surrealdb/security/advisories/GHSA-vjjx-rfw4-rmfc](https://github.com/surrealdb/surrealdb/security/advisories/GHSA-vjjx-rfw4-rmfc)
- [https://www.vulncheck.com/advisories/surrealdb-before-permission-bypass-via-graph-traversal](https://www.vulncheck.com/advisories/surrealdb-before-permission-bypass-via-graph-traversal)

## Related threats

- [SurrealDB use-after-free in KV backends via affinitypool spawn_local](https://junglewise.ai/threats/cve-2026-121417-surrealdb-before-3-3-0-contains-a-use-after-free-vulnerability)
- [SurrealDB JSON parser denial of service via uncontrolled recursion](https://junglewise.ai/threats/surrealdb-json-parser-denial-of-service-via-uncontrolled-recursion-3037f8a0)
- [SurrealDB ES512 algorithm silently downgraded to ES384](https://junglewise.ai/threats/surrealdb-es512-algorithm-silently-downgraded-to-es384-f0af29b8)
- [SurrealDB permission bypass via WHERE clause evaluation](https://junglewise.ai/threats/surrealdb-permission-bypass-via-where-clause-evaluation-afa6f001)
- [SurrealDB authorization bypass in KILL statement](https://junglewise.ai/threats/surrealdb-authorization-bypass-in-kill-statement-fc230d0f)